The Transmitter Development Of SNMR Instrument For Groundwater Investigation

It wasn't able to investigate underground water directly until the technology of NMR (Nuclear Magnetic Resonance) was used in the geophysics. Our country is one of thirteen countries that lack of water on the average. More and more importance has been attached to research of investigating water with NMR technique and it would become the key technique to investigate groundwater. The instrument includes two parts: transmitter system and collection system. The transmitter is the main equipment, and its technique level impacts the depth of water investigation. The content of the thesis is to develop the transmitter with the big current to investigate the deeper groundwater.In order to make the H proton of groundwater produce the NMR phenomenon, the big power of transmitter system with Lamor frequency pulses is provided to the loop. The alternating current generates alternating magnetic field. The frequency precision of transmitter, the order of signal degree and the transmitting current magnitude affect the signal precision and reliability of the NMR signal. The transmitter is required that the transmitting...